No PAN Number (of Employee) in Form 16 - is this Form-16 valid?

For some security deposit reasons i have to submit my father's Form-16 to my employer. My employer mentioned to submit the Pan Card copy along with the IT Returns/Form 16/Saral/Form 2D/Form 12B as the surety's income proof. My Father is a State Government Employee. When a Form 16 is requested at my father's office it came without the PAN Number. Also the Form is named as FORM-16AA [See rule 31(1)(a)]. Now my questions are 1. Is this form valid (as it is without the PAN Number)? 2. Can i submit Form-16AA for Form-16? 3. Can i submit this form to my employer?